package demo;

import java.io.FileOutputStream;
import java.io.IOException;

public class HelloWorld {
    public static void main(String[] args) throws IOException{
        FileOutputStream fos = new FileOutputStream("helloworld.txt");
        fos.write("Hello World!".getBytes());
        fos.write("Hello java!".getBytes());
        fos.write("branch1!!!".getBytes());
        System.out.println("写出完毕!");
        System.out.println("master上修改的内容！！");
        fos.close();
    }
}
